Sergio Aragone's MAD Look At Instruments concludes with a two page spread of various other instrument-related gags. My favorite one involves a boy in marching band switching instruments so he can walk behind a girl with a really hot ass instead of one with a really fat ass. The top comic is pretty good too. A kid's dad convinces him to practice the piano by telling him it'll impress girls. The boy begins to practice and imagines himself wooing a chesty young lady with his amazing skills in some upscale joint. Then, some suave asshole comes up to the girl and steals her away to dance with him while our protagonist remains at his piano, powerless to do anything about it. Pissed off by his imaginary cockblock, the boy vows never to play piano again. Instead, he goes to back to model planes. You know, because those are a HUGE pussy magnet.